EP0717580A3 - Handover method based upon channel quality measurements - Google Patents

Handover method based upon channel quality measurements Download PDF

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Publication number
EP0717580A3
EP0717580A3 EP95308703A EP95308703A EP0717580A3 EP 0717580 A3 EP0717580 A3 EP 0717580A3 EP 95308703 A EP95308703 A EP 95308703A EP 95308703 A EP95308703 A EP 95308703A EP 0717580 A3 EP0717580 A3 EP 0717580A3
Authority
EP
European Patent Office
Prior art keywords
method based
channel quality
handover method
quality measurements
handover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95308703A
Other languages
German (de)
French (fr)
Other versions
EP0717580A2 (en
Inventor
Robert Chuenlin Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of EP0717580A2 publication Critical patent/EP0717580A2/en
Publication of EP0717580A3 publication Critical patent/EP0717580A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
EP95308703A 1994-12-14 1995-12-01 Handover method based upon channel quality measurements Withdrawn EP0717580A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US355890 1994-12-14
US08/355,890 US5649290A (en) 1994-12-14 1994-12-14 Handover method based upon channel quality

Publications (2)

Publication Number Publication Date
EP0717580A2 EP0717580A2 (en) 1996-06-19
EP0717580A3 true EP0717580A3 (en) 1997-10-22

Family

ID=23399229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95308703A Withdrawn EP0717580A3 (en) 1994-12-14 1995-12-01 Handover method based upon channel quality measurements

Country Status (5)

Country Link
US (1) US5649290A (en)
EP (1) EP0717580A3 (en)
JP (1) JPH08237716A (en)
KR (1) KR100236811B1 (en)
CN (1) CN1135151A (en)

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FI101926B (en) * 1995-12-29 1998-09-15 Nokia Telecommunications Oy Reverse handover between mobile switching centers
US5886988A (en) * 1996-10-23 1999-03-23 Arraycomm, Inc. Channel assignment and call admission control for spatial division multiple access communication systems
EP0866628A3 (en) * 1997-03-19 2001-01-31 AT&T Corp. System and method for dynamic channel assignment
SE510052C2 (en) * 1997-08-15 1999-04-12 Ericsson Telefon Ab L M Procedure for handover in a mobile radio system, system for mobile radio, as well as mobile terminal and radio base station included in such a system
US6154450A (en) * 1997-08-22 2000-11-28 Telefonaktiebolaget Lm Ericsson Signaling method for CDMA quality based power control
US7184426B2 (en) 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US9118387B2 (en) * 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
JP3380725B2 (en) * 1997-11-04 2003-02-24 富士通株式会社 Wireless communication system control method, wireless communication system, and information processing device used therein
US6006097A (en) * 1997-11-24 1999-12-21 Telefonaktiebolaget L M Ericsson (Publ) Method for determining position of mobile communication terminals
GB9810394D0 (en) * 1998-05-14 1998-07-15 Simoco Europ Limited Radio communications system
GB2339647A (en) 1998-07-15 2000-02-02 Ericsson Telefon Ab L M Warning of Interference between Radio Links
GB2343330A (en) * 1998-10-29 2000-05-03 Fujitsu Ltd Soft handoff method using a backup link
US6198910B1 (en) 1999-04-28 2001-03-06 Nortel Networks Limited Cellular network having improved method for managing RF channels
KR20000072944A (en) * 1999-05-03 2000-12-05 윤종용 Method for limiting reverse call in mobile telecommunication base station
US8064409B1 (en) 1999-08-25 2011-11-22 Qualcomm Incorporated Method and apparatus using a multi-carrier forward link in a wireless communication system
JP3349477B2 (en) * 1999-09-08 2002-11-25 三洋電機株式会社 Mobile communication device, mobile communication system, and communication channel assignment request method
US6621804B1 (en) * 1999-10-07 2003-09-16 Qualcomm Incorporated Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
US6711408B1 (en) * 2000-02-05 2004-03-23 Ericsson Inc. Position assisted handoff within a wireless communications network
DE60026454T2 (en) * 2000-05-19 2006-11-09 Lucent Technologies Inc. Wireless local area network with load sharing
JP3821636B2 (en) * 2000-08-21 2006-09-13 松下電器産業株式会社 COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE, AND RADIO COMMUNICATION METHOD
US6973098B1 (en) 2000-10-25 2005-12-06 Qualcomm, Incorporated Method and apparatus for determining a data rate in a high rate packet data wireless communications system
US7068683B1 (en) 2000-10-25 2006-06-27 Qualcomm, Incorporated Method and apparatus for high rate packet data and low delay data transmissions
US6980803B2 (en) * 2000-12-04 2005-12-27 Telefonaktiebolaget Lm Ericsson (Publ) Using statistically ascertained position for starting synchronization searcher during diversity handover
EP1257093B1 (en) * 2001-05-08 2006-07-26 Agere Systems Guardian Corporation Wireless network system comprising access points
US6810236B2 (en) 2001-05-14 2004-10-26 Interdigital Technology Corporation Dynamic channel quality measurement procedure for adaptive modulation and coding techniques
KR100429513B1 (en) * 2001-12-12 2004-05-03 삼성전자주식회사 Service switching method based on quality of service in a mobile telecommunication system
JP3914844B2 (en) * 2002-08-22 2007-05-16 日本電気株式会社 Non-instantaneous hard handover control apparatus and method
UA85181C2 (en) * 2003-02-19 2009-01-12 Квелкомм Инкорпорейтед Method and device for advanced coding in multiuser communication systems (embodiments)
KR100597488B1 (en) 2004-01-09 2006-07-10 주식회사 팬택 Method for idle handoff in wireless communication terminal
CN100493228C (en) * 2005-03-10 2009-05-27 大唐移动通信设备有限公司 Switchover controll method of multiple frequency points system
KR100818637B1 (en) * 2006-12-07 2008-04-01 한국전자통신연구원 Method and apparatus for hand-over in mobile network including satellite network
KR101401965B1 (en) * 2007-05-25 2014-06-02 삼성전자주식회사 Method for measuring a state of a plurality of channels and apparatus, Method for selecting idle channel and apparatus therefor
US8126463B2 (en) * 2007-09-12 2012-02-28 Kabushiki Kaisha Toshiba Mobile communication system, base station control apparatus, mobile terminal and method for controlling handover
JP5319257B2 (en) * 2008-12-05 2013-10-16 西日本旅客鉄道株式会社 Mobile communication equipment inspection system
US9420506B2 (en) * 2009-07-30 2016-08-16 Continental Automotive Systems, Inc. Method and apparatus to facilitate influencing handover decisions
US8811200B2 (en) 2009-09-22 2014-08-19 Qualcomm Incorporated Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems
US9730135B1 (en) * 2016-07-28 2017-08-08 At&T Intellectual Property I, L.P. Radio access network resource configuration for groups of mobile devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239675A (en) * 1991-04-10 1993-08-24 Motorola, Inc. Reduced noise interference during handoff
EP0589595A2 (en) * 1992-09-21 1994-03-30 AT&T Corp. Method and apparatus for detecting a supervisory audio tone

Family Cites Families (9)

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US4718081A (en) * 1986-11-13 1988-01-05 General Electric Company Method and apparatus for reducing handoff errors in a cellular radio telephone communications system
SE460941B (en) * 1988-04-26 1989-12-04 Ericsson Telefon Ab L M PROCEDURE IN A CELL-DIVIDED MOBILE PHONE SYSTEM TO REDUCE SUSPENSION BY TRANSFER OF CALLS
US5189734A (en) * 1988-11-16 1993-02-23 U.S. Philips Corporation Cellular radio system
US5257401A (en) * 1989-04-17 1993-10-26 Telefonaktiebolaget L M Ericsson Method of maintaining an established connection in a mobile radio system comprising both analog and digital radio channels
US5001742A (en) * 1990-01-29 1991-03-19 At&T Bell Laboratories Baseband signal processing unit and method of operating the same
GB2242805B (en) * 1990-04-06 1994-08-03 Stc Plc Handover techniques
CA2052466C (en) * 1990-10-02 2001-05-08 Masayuki Sakamoto Method of handover and route diversity in mobile radio communication
US5204970A (en) * 1991-01-31 1993-04-20 Motorola, Inc. Communication system capable of adjusting transmit power of a subscriber unit
US5475870A (en) * 1994-09-12 1995-12-12 Qualcomm Incorporated Apparatus and method for adding and removing a base station from a cellular communications system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239675A (en) * 1991-04-10 1993-08-24 Motorola, Inc. Reduced noise interference during handoff
EP0589595A2 (en) * 1992-09-21 1994-03-30 AT&T Corp. Method and apparatus for detecting a supervisory audio tone

Also Published As

Publication number Publication date
CN1135151A (en) 1996-11-06
US5649290A (en) 1997-07-15
KR960027578A (en) 1996-07-22
JPH08237716A (en) 1996-09-13
KR100236811B1 (en) 2000-01-15
EP0717580A2 (en) 1996-06-19

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